English verb conjugation
CAN CLICK

Regular verb: click - clicked - clicked

Affirmation

Simple form	V-ing form
I can click you can click she can click we can click you can click they can click	I can be clicking you can be clicking she can be clicking we can be clicking you can be clicking they can be clicking
Perfect	V-ing perfect
I can have clicked you can have clicked she can have clicked we can have clicked you can have clicked they can have clicked	I can have been clicking you can have been clicking she can have been clicking we can have been clicking you can have been clicking they can have been clicking

Negation

Simple form	V-ing form
I cannot click you cannot click she cannot click we cannot click you cannot click they cannot click	I cannot be clicking you cannot be clicking she cannot be clicking we cannot be clicking you cannot be clicking they cannot be clicking
Perfect	V-ing perfect
I cannot have clicked you cannot have clicked she cannot have clicked we cannot have clicked you cannot have clicked they cannot have clicked	I cannot have been clicking you cannot have been clicking she cannot have been clicking we cannot have been clicking you cannot have been clicking they cannot have been clicking

Interrogative form

Simple form	V-ing form
can I click? can you click? can she click? can we click? can you click? can they click?	can I be clicking? can you be clicking? can she be clicking? can we be clicking? can you be clicking? can they be clicking?
Perfect	V-ing perfect
can I have clicked? can you have clicked? can she have clicked? can we have clicked? can you have clicked? can they have clicked?	can I have been clicking? can you have been clicking? can she have been clicking? can we have been clicking? can you have been clicking? can they have been clicking?

Interro-negative form

Simple form	V-ing form
can I not click? can you not click? can she not click? can we not click? can you not click? can they not click?	can I not be clicking? can you not be clicking? can she not be clicking? can we not be clicking? can you not be clicking? can they not be clicking?
Perfect	V-ing perfect
can I not have clicked? can you not have clicked? can she not have clicked? can we not have clicked? can you not have clicked? can they not have clicked?	can I not have been clicking? can you not have been clicking? can she not have been clicking? can we not have been clicking? can you not have been clicking? can they not have been clicking?